The ends of a metal rod are kept at temperatures -1 and -2 with -2-1- The rate of flow of heat along the rod is directly proportional to-

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Byju's Answer

Standard XII

Physics

Conduction Law

The ends of a...

Question

$T h e e n d s o f a m e t a l r o d a r e k e p t a t t e m p e r a t u r e s θ_{1} a n d θ_{2} w i t h θ_{2} > θ_{1} . T h e r a t e o f f l o w o f h e a t a l o n g t h e r o d i s d i r e c t l y p r o p o r t i o n a l t o .$

the length of the rod

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the diameter of the rod

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the cross-sectional area of the rod

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the temperature difference . between the ends of the rod.

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Solution

The correct options are
C
the cross-sectional area of the rod

D
the temperature difference . between the ends of the rod.

$T h e r a t e o f f l o w o f h e a t i s g i v e n b y \frac{Q}{1} = \frac{K A (θ_{2} - θ_{1})}{l} W h e r e k i s t h e t h e r m a l c o n d u c i t i v y, A t h e c r o s s - s e c t i o n a l a r e a a n d l t h e l e n g t h o f t h e r o d . H e n c e t h e c o r r e c t c h o i c e a r e (c) a n d (d)$

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The ends of a metal rod are kept at temperatures θ1 and θ2 with θ2 > θ1. The rate of flow of heat along the rod is directly proportional to.

$T h e e n d s o f a m e t a l r o d a r e k e p t a t t e m p e r a t u r e s θ_{1} a n d θ_{2} w i t h θ_{2} > θ_{1} . T h e r a t e o f f l o w o f h e a t a l o n g t h e r o d i s d i r e c t l y p r o p o r t i o n a l t o .$